Mechanical refrigeration



March 1 1927. 1,619,548

C. C. SPREEN MECHANICAL REFRIGERATION Original Filed M r h 14, 192 3 sheets-Sheet 1 q q q,

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UNITED STATES 1,619,548 PATENT OFFICE.

CHARLES C. SPREEN, OI DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO ELECTRIC REFRIGERATION CORPORATION, OF DETROIT, MICHIGAN, A COR- PORATION OF MICHIGAN.

MECHANICAL REFRIGERATION.

Original application filed March 14, 1925, Serial No. 15,447.

Patent No. 1,549,335, dated August 11, 1925.

Divided and this application filed June 22, 1925. Serial No. 88,679.

My invention is a division Serial Number 15,447 filed March 14, 1925, and relates to mechanical refrigeration, particularly to refrigerating cabinets of the type used by retailers for refrigerating ice cream,

and the principal object of my invention is to provide a new and improved cab1net of this type. In the drawings accompanying this specification and forming a part thereof, I have shown, for purposes of illustration, one form which my invention may assume. In these drawings:

Figure 1 is a front elevation of this illustrative embodiment of my invention,

Figure 2 is a View similar to Figure'l but showing the cover raised and the closure partly raised,

Figure 3 is a longitudinal section through the refrigerating section of the cabinet.

Figure 4 is a horizontal section through the brine tank illustrating the expansion coil unit, while Figure 5 is a fragmentary side elevation of the expansion coil unit.

The cabinet herein shown comprises a refrigerating section 21 and a machinery compartment 22.

The refrigerating section herein shown comprises six upwardly opening receptacles 23 each adapted to receive an'ice cream can of the usual type and each supported by means of cross strips 24 superimposed upon runners 25 resting upon the bottom wall 26 of a, brine tank 27 surrounded, and support the cabinet, by insulating material disposed within the space 28 and omitted from the drawings to facilitate disclosure of other parts.

The frame of the cabinet comprises two lower longitudinal angles 29 extending the entire length of the cabinet, two co-extensive upper longitudinal angles 30, a plurality of cross angles 31 extending between the lower longitudinal angles 29 and secured thereto by means of tie plates 32, a plurality of cross angles 33 extending between the upper longitudinal angles and secured thereto by tie plates 34, and a plurality of vertical angles 35 extending between the upper and lower longitudinal angles on each side and riveted directly thereto. Within this frame are panels 36 closing the bottom of the refrigerating section 21, dividing the refrigerof application ating section 21 and the machinery compartment 22 is a panel 41 secured to the cross and vertical angles present at that point, exteriorly of the frame are end panels 37 and side panels 38 closing the two ends of the frame and thetwo sides of the refrigerating section 21 and secured in position upon the frame both by machine screws extending through the panels directly into the frame and also by cover strips 39 secured to the frame by means of suitable machine screws 40 and serving to 'not only additionally secure the panels in position but also to cover and conceal the joints between panels, while closing the upper surface of the brine tank 27 exteriorly of the receptacles 23 is a metal top plate 42 secured in turn to an annular wooden top plate 43 which closes the annular space between the top of the brine tank 27 and the top of the walls 37, 38, and 41.

Disposed within the brine tank 27, and about the receptacles 23, is an expansion unit comprising an inlet header 44, an outlet header 45, and a plurality of vertically spaced coils 46 each extending from the bottom face of the inlet header 44 about the receptacles 23 and thence into the bottom face of the outlet header 45. Extending from the outlet header 45 is a duct 47 connected, through a fitting 48 sealed into the wall of the brine tank 27, to one end of a duct 49 which leads to a compressor 51 having its outlet connected to a condenser 54 connected to the inlet header 44 through a duct 56, an expansion valve 57, a duct 58, a fitting 59 sealed into the wall of the refrigerating chamber 27, and a duct 60.

The top of the entire cabinet is closed by a single cover comprising a wooden body 84 and an enameled sheet metal facing 85, overlying the body 84, provided with a plurality of apertures 86 registering with the to s of the receptacles 23 and arranged to be c osed by means of removable closures 87, hinged along the rear wall of the cabinet as shown in Figure 2, and secured in closed position in any suitable manner as by bolts extendin through the cover into permanent sockets afg fixed to the cabinet (not shown).

It will be obvious that I have provideda cabinet superior to any cabinet heretofore devised, particularly inits expansion unit. In

addition, those killed in. th a t find advantages in this construction other than those specifically pointed out herein and at the same time will realize that the particular embodiment of my invention herein shown and described may be variously changed and modified without departing from the spirit of my invention or sacrificing the advantages thereof. It will therefore be understood that this disclosure is illustrative only and that my invention is not limited thereto.

I claim:

1. In a mechanical refrigerator unit, comprising refrigerant compressing mechanism: a refrigerant expansion unit comprising a horizontal inlet manifold provided with a plurality of outlets, and with an intake; a horizontal outlet manifold provided with a plurality of inlets, and with a discharge; duct means for connecting such compressing mechanism to said intake; duct means for connecting said discharge to such compressing mechanism; and a plurality of vertically spaced substantially flat substantially horizontally disposed coils each connected between one of said outlets and one of said inlets.

2. In a mechanical refrigerator unit, comprising refrigerant compressing mechanism: a refrigerant expansion unit comprising a horizontal inlet manifold provided with a plurality of outlets, and with an intake; a horizontal outlet manifold provided with a plurality of inlets, and with a discharge; duct means for connecting such compressing mechanism to said intake; duct means for connecting said discharge to such compressing mechanism; and a plurality of vertically spaced substantially fiat substantially horizontally disposed coils each connected between one of said outlets and one of said inlets, and each comprising a single turn all disposed substantially in a single horizontal plane.

3. In a mechanically refrigerated ice cream cabinet unit, having a tank, and having receptacles extending into said tank from the upper face thereof and formed to receive ice cream packages for refigcrated storage thereof, and comprising refrigerant compressing mechanism: a refrigerant expansion unit disposed within said tank and comprising a horizontal inlet manifold provided with a lurality of outlets, and with an intake; a orizontal outlet manifold provided with a plurality of inlets, and with a discharge; ductmeans for connecting such compressing mechanism to said intake; duct means for connecting said discharge to such compressing mechanism; and aplurality of vertically spaced substantially flat substantially horizontally disposed coils encircling said receptacles and each connected between one of said outlets and one of said inlets.

4. In a mechanically refrigerated ice cream cabinet unit, having a tank, and receptacles extending into said tank from the upper face thereof and formed to receive ice cream packages for refrigerated storage thereof, and comprising refrigerant compressing mechanism: a refrigerant expansion unit disposed within said tank and comprising a horizontal inlet manifold provided with a plurality of outlets, and with an intake; a horizontal outlet manifold provided with a plurality of inlets, and with a discharge; duct means for connecting such compressing mechanism to said intake; duct means for connecting said discharge to such compressing mechanism; and a plurality of vertically spaced substantially flat substantially horizontally disposed coils encircling said receptacles and each connected between one of said outlets and one of said inlets, and each comprising a single turn all disposed substantially in a single horizontal plane.

In testimony whereof I hereunto affix my signature.

CHARLES C. SPREEN. 

